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Instantaneous Decay of Tritium into Helium
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[QUOTE="vela, post: 6851450, member: 221963"] The electron is described by a state vector ##\lvert \psi \rangle## which belongs to some vector space. Once we choose some basis for this vector space ##\{\lvert \phi_1 \rangle, \lvert \phi_2 \rangle, \dots\}##, we can represent ##\lvert \psi \rangle## as a linear combination of these basis vectors: $$\lvert \psi \rangle = c_1 \lvert \phi_1 \rangle + c_2 \lvert \phi_2 \rangle + \cdots.$$ One possible basis we could choose consists of the energy eigenstates. Suppose ##\lvert \phi_1 \rangle## corresponds to the ground state, the state with the lowest energy. Then to be in the ground state simply means ##\lvert \psi \rangle## points only along the ##\lvert \phi_1 \rangle## direction. That is, ##\lvert c_1 \rvert = 1## and ##c_2=c_3=\cdots = 0##. [/QUOTE]
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Instantaneous Decay of Tritium into Helium
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